STATIC BUCKLING ANALYSIS OF BI-DIRECTIONAL FUNCTIONALLY GRADED POROUS MICROPLATE USING ISOGEOMETRIC APPROACH

Abstract

This This work analyzes the bukling of porous microshell by using the
isogeometric method (IGA), the modified couple stress theory, and Kirchhoff-
classical Love's shell theory. In which the mechanical properties change along the x-
length and thickness dimensions. The whole shell is supported by a Pasternak elastic
foundation, and the exponential mechanical characteristics of the material, along
with two different kinds of porosity, are both even and uneven. Consideration of the
changeable length-scale characteristics as the material's mechanical properties is
novel to this work. Using Hamilton's principle gives the equation for evaluating the
shell of buckling. Through reliable numerical comparisons, the method's precision
was determined. In addition, a numerical analysis is conducted to determine the
effect of characteristics such as porosity, length-scale parameter, elastic foundation
stiffness, and other coefficients on the microshell buckling.